title: Immunocytochemical localization of BP, a conceptus secretory protein, in trophectoderm during pig trophoblast elongation.
abstract: Tissue sections of periimplantation pig conceptuses (days 9-15 of pregnancy) were incubated with antiserum to the basic protein (BP), a major secretory protein of filamentous pig blastocysts. Bound antibody was detected by the peroxidase-antiperoxidase method. BP was restricted to trophectoderm in conceptuses which had made the transition from a spherical to an ovoid shape having a diameter of greater than 5 mm (day 11). Tubular (day 11, 10-20 mm) and filamentous (day 11-15) conceptus trophectoderm contained BP. These results suggest that BP synthesis commences at the time of rapid trophoblast growth.
authors.affiliation: Department of Animal Science, College of Veterinary Medicine, University of Tennessee, Knoxville 37901.
authors.forename: G A
authors.initials: GA
authors.lastname: Baumbach
authors.forename: N G
authors.initials: NG
authors.lastname: Bartley
authors.forename: H G
authors.initials: HG
authors.lastname: Kattesh
authors.forename: J D
authors.initials: JD
authors.lastname: Godkin
mesh_terms: D000818:Animals; D001755:Blastocyst / Q000737:chemistry* / Q000648:ultrastructure; D004475:Ectoderm / Q000737:chemistry*; D005865:Gestational Age; D007124:Immunoenzyme Techniques; D011506:Proteins / Q000032:analysis*; D013552:Swine / Q000196:embryology*; D014327:Trophoblasts / Q000737:chemistry*
chemical_list: D011506:Proteins